There’s nothing like a good rumor to get the week started and this time it’s a big one, as it concerns the follow-up to the current darling of the Android world, the Samsung Galaxy S3.

According to a report in the Korea Times, Samsung is readying the Galaxy S4 for launch during Mobile World Congress next year, before going on sale in March.

The quote comes from an unnamed Samsung official, who adds that the next Galaxy flagship will have a similar design to the S3 — keeping its “popular rectangular shape with rounded corners,” but potentially increasing the screen size again, this time to 5-inches.

A quad-core Exynos processor will power the device, Android will be the operating system, and it will support 4G LTE networks all over the world. The article makes particular mention of Europe here, where 4G is beginning to become more widespread, plus the UK will hold its 4G spectrum auction early next year too.

The report continues to say that Samsung is still considering using its flexible screen technology for the S4, but hasn’t made a final decision, although talk of production problems make it sound unlikely.

Is it true?

Samsung is almost certainly working on a follow-up to the Galaxy S3, and it could well be named the Galaxy S4, but what about the rest of the report’s speculation? It’s equally as likely to use another Exynos processor in the S4, but whether this will be another quad-core chip, or the Exynos 5 Dual with its high resolution screen support, isn’t quite so clear cut.

Android and 4G LTE are also obvious features, while a push to a 5-inch screen isn’t that unlikely either. Remember, the S3 and the Galaxy Note 2 aren’t that much larger than their predecessors, despite the respective increase in screen size.